Features: Bluetooth-compatible connection: Supports bluetooth-compatible module for easy wireless connection with other devices. FPV Traversing Aircraft Parameter Adjustment: Wireless parameter adjustment function suitable for aircraft model FPV Traversing Aircraft. Highly compatible: able to be compatible with various aircraft model FPV traversal aircraft system. Stable transmission: The bluetooth-compatible module provides stable data transmission, ensuring the accuracy of parameter adjustments. Easy to operate: A simple and user-friendly interface that facilitates user parameter settings and adjustments. Lightweight and Portable: The is designed to be small and lightweight, making it easy to carry and use. Specifications: Material: PCB Quantity: 1pc, 2pcs(optional) Size: about 14x11mm/0.55x0.43inch Working voltage: 5V Working current: up to 87mA(5V) Package Includes: 1x/2x Bluetooth-compatible Module(optional) note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.